Gage-glass holder.



No. 827,713. PATENTED AUG. 7, 1906. H. DEL MAR.

GAGE GLASS HOLDER.

APPLIO'ATION FILED AUG. 14} 1906.

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UNITED STATES PATENT @FFBOE.

HARRY DEL MAR, OF NEW YORK, N. Y., ASSIGNOR TO BOILERS AND ENGINEERING COMPANY, OF JERSEY CITY, NEW JERSEY, A GOR- PORATION OF NEW JERSEY.

GAGE-GLASS HOLDER.

Specification of Letters Patent.

Patented Aug. 7, 1906.

T0 [t7], whom, it may concern:

Be it known that I, HARRY DEL MAR, of the city, county, and State of New York, have invented a new and Improved Gage- Glass Holder, of which the following is a full, clear, and eXact description.

My invention relates to improvements in gage-glass holders such as are used on steamboilers, other water-columns, lubricators, and liquid-containing vessels generally, to indicate the height of water in the said vessels. It is well known that there is difficulty in applying gage-glasses to such things, that the glasses are quite likely to be broken, and that where hot water or hot material enters the glass suddenly it is very apt to be fractured.

The object of my invention is to produce a device having a holder in which the gage glass may be securely fastened, so as to be steam, air, and water tight before the glass is placed in its permanent position, and also to provide means by which the holder and the glass can be easily, quickly, and tightly secured in its position on the boiler or other article to which it is applied.

My invention is also intended to provide means for carrying away some of the heat when hot water or steam enters the gageglass, so as to prevent the glass from being broken; to provide a reflector which will make the height of water in the glass easily observable, and, in general, to produce a device which will make the gage-glass more secure, more easily applied than usual, and which will preserve its life.

Vith these ends in view my invention con sists of certain features of construction and combinations of parts, which will be hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters and figures of reference indicate corresponding parts in all the views.

Figure 1 is an elevation, partly in vertical section, showing my improved apparatus as applied to a water-column. Fig. 2 is a crosssection through the reflector, and Fig. 3 is a detail view of a modification of a part of the device.

My invention comprises, essentially, two portionsto wit, the glass-holder A and the connections B or B between the glass-holder and the stationary fittings of the boiler or other article to which the gage-glass is applied.

The glass 10 may be any usual form of gage-glass, and it has at the ends a metal ferrule 11, the inner portion of which corresponds in size to the bore of the gageglass, while the outer portion 12 is adapted to fit on over the gage-glass, as shown at the top of Fig. 1, the inner and outer portions being connected by a horizontal seat, against which the gaskets 13 and 14 rest. The resilient gasket 13 fits against the end of the gage-glass and against the seat of the ferrule 11, while the similar gasket 14 fits against the outer side of the seat and abuts with the inner portion 16 of the stuffing-box, which comprises the said threaded inner portion 16 and the outer nut 15. The stuffing-box can be of any usual kind and is arranged, as usual, at the ends of the gage-glass. The part 16 of the stuffing-box is provided with flanges 17, and the flanges of each stuffing-box are spaced apart by the tubes 18 and are held together by the rods 19, which have suitable heads and nuts and extend through the flanges and spacing-tubes 18, this construction being usual in analogous fastening devices, but new, so far as I know, in gage-glass holders. The spacing-tubes 18 prevent the stufling-boxes from being brought too near together and straining the glass, and the rods 19, acting on the opposite sides of the flanges 17, prevent the separation of the flanges and stuffing-boxes, and so the combined effect of the rods and tubes is to hold the joints of the gage-glass holder rigid before the gage-glass holder is coupled to the stationary fittings. Consequently the stuffing-boxes are not likely to be at all disturbed.

The gage-glass has on the inner side a me tallic strip 20, which is a good conductor of heat and contacts at the ends with the ferrule 1 1 and can contact with any of the metal part of the fittings at the ends of the gageglass. It will be seen that when hot water or steam enters the gage-glass the surplus heat will pass off through the good conductor 20 and other metal parts of the apparatus, and as the conductor 20 is in contact with the glass and the glass therefore will be prevented from cracking.

Behind the gage-glass 10 I arrange a reflector, which is preferably corrugated longitudinally and which is also preferably made in two similar parts 21, which overlap and are fastened together by a screw 22, one of the parts being slotted to permit of adjustment. The parts 21 of the reflector have flanges 23, which turn in and through which are holes 24 and 25, the former serving to receive the spacing-tubes 18 and the holes 25 serving to receive the fastening-screws 26, by which the flanges 23 are secured to the flanges 17. Obviously any suitable fastening means can be used to secure the reflector in place and any usual construction which permits the adjustment of the parts 21 with relation to each other.

Itwill be seen from the foregoing description that the gaskets 13 and 14 can be adjusted on the ferrule 11, the glass inserted in the nuts and against the gaskets, the nuts 15 screwed to the parts 16, and thus the whole holder A is securely fastened together and the gage-glass held permanently and rigidly in the said holder. The holder, with its glass, may then be connected to the stationary fittings of the boiler or other vessel, as described presently. The connections between the holder and the stationary fittings may be through the medium of the construction shown at B in Fig. 1 or B in Fig. 3. In either case the stuffing-box at each end of the holder A has a nipple 27 at its outer end, which is externally screw-threaded and engages the inner threaded portion of the coupling 28, which has a head 29, which engages the nut 30, this nut forming part of a groundjoint union and being adapted to slip over the coupling 28 and fit against the aforesaid head 29. The nut 30 is also adapted to fit the thickened threaded end 31 of the pipe 32, which connects with the stationary pipe 33 of the boiler, water-column, or other receptacle 34, the two pipes 33 being provided with the usual gage-cocks 35 and with the drain-cock 36. It will of course be seen that the couplings 28 can be slipped through the nut 30 and screwed to the pipes 27. It will also be understood that this form of grounda joint union can be departed from without affecting the principle of the invention. In Fig. 3 I have shown an ordinary flexible pipe 32 which can be substituted for the pipe 32, if preferred, and which thus makes a flexible connection between the pipes 33 by means of I the connecting gage-glass holder A.

From the foregoing description it will be seen that I provide a simple means of securing the gage-glass in its holder and of then fastening the holder in position, connecting with the permanent fittings of any liquidcontaining structure, and it will also be understood that in any of the details of construction can be changed considerably without affecting the principle of the invention. For instance, any suitable connection can be substituted for the flanges 17 and their connecting-bolts. Different stuffing-boxes can be used and various forms of ground-joint unions at B.

Having thus fully described my invention, I claim as new and desire to secure by Let te'rs Patent 1. A gage-glass holder comprising stuflingboxes inclosing the outer ends of the gageglass, said stuffing-boxes having external flanges, ferrules arranged within the stuffingboxes and provided with gaskets on opposite ends said ferrules inclosing the outer parts of the gage-glass and having flanges extending outward into the stuffing-boxes, spacing and fastening rods connecting the opposite flanges of the stuffing-boxes, and coupling devices to connect the stuffing-boxes with the stationary fittings of a liquid-containing vessel.

2. A gage-glass holder comprising opposite stuffingboxes adapted to receive the ends of a gage-glass, couplings to connect the stufling-boxes with the statlonary fittings of a liquid-containing vessel, and a flexible connection between the couplings and'the' said 0 liquid-containing vessel. I

3. A gage-glassholder comprising 'op g sitely-arrang'ed stuffing-boxes to receive the Y ends of a gage-glass, fastening devices connecting the opposite stufling-boxes together and serving also to space them apart, and a flexible connection between the stuflingboxes and a liquid-containing vessel.

HARRY DEL MAR. i/Vitnesses:

WARR N B. HUTGHINsON, WILLIS A. BARNES. 

